@article{ref1,
title="Lightning strikes: danger overhead",
journal="British journal of sports medicine",
year="1998",
author="ten Duis, H. J.",
volume="32",
number="4",
pages="276-278",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0306-3674",
doi="",
url="http://dx.doi.org/"
}